The 204 I had, in which was short lived in my cabinet, was a most excellent shooter. I was able to get 1/4" groups when I did my part, as I do with my 223 Ultra. Only reason I got rid of it was I have too much reloading supplies for my 223 to warrant pursuing a 204.
The 204 is a very nice little cartridge and is very explosive. If you are interested in this caliber, I say go ahead and give her a try and pick up a box of V-Max's. Once you got her dialed in you will be happy with the destructiveness of this little cartridge.
-Aaron